https://community.qvc.com/t5/Electronics/Windows-Media-Player-amp-MP4-files/m-p/82096#M951 <P>My Tai Chi instructor made a practice video using a cell phone and then burned DVDs for class members. It is an MP4 file, which I am unable to view on my laptop. I have Windows Vista and Windows Media Player 11. I think I need to install a decoder or codec file so I can play MP4 files on my laptop. Can anyone give me more details, and recommend a reputable site from which to download the needed file? TIA </P> Mon, 23 May 2011 22:32:59 GMT lynne6was7 2011-05-23T22:32:59Z https://community.qvc.com/t5/Electronics/Windows-Media-Player-amp-MP4-files/m-p/82096#M951 <P>My Tai Chi instructor made a practice video using a cell phone and then burned DVDs for class members. It is an MP4 file, which I am unable to view on my laptop. I have Windows Vista and Windows Media Player 11. I think I need to install a decoder or codec file so I can play MP4 files on my laptop. Can anyone give me more details, and recommend a reputable site from which to download the needed file? TIA </P> Mon, 23 May 2011 22:32:59 GMT https://community.qvc.com/t5/Electronics/Windows-Media-Player-amp-MP4-files/m-p/82096#M951 lynne6was7 2011-05-23T22:32:59Z